This presentation from Drupalcon Portland 2013 takes a look at pairing DevOps with Drupal:

We'll provide an intro to DevOps (what it is and what it isn't), talk about the needs and goals for infrastructure as code, and how it applies to Drupal. We'll also talk about Opscode Chef, our configuration management tool of choice for automation in working with Drupal and how we use it to make our lives (and the lives of our clients) better. We'll show examples of how to build, deploy, and manage Drupal stacks and sites leveraging the power and flexibility of Chef.